Introducing the Special Screw Air Compressor, meticulously engineered for Powder Conveying applications. This Closed Type Low Pressure Stationary Screw Air Compressor is the perfect choice for industries such as Cement Mixing Plants, Flour Mills, Coal Ash handling, and Mineral Powder processing. Available in a wide range of power specifications, including 11KW, 22KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, and 132KW, this compressor guarantees robust performance and unparalleled efficiency for all your industrial needs.
Why choose Sanzhi dust special compressor?
The primary function of the Sanzhi Low Pressure Screw Air Compressor, specifically designed for dust conveying, is to efficiently transport materials like dust, cement, and various other particles. Operating at a working pressure range of 0.15-0.4Mpa, this remarkable machine features a direct drive system, a large head, and low rotational speed for optimal performance. It incorporates a German-engineered special oil-air separation structure, ensuring minimal noise and vibrations. Installation is a breeze with no need for any foundational setup. The compressed air moves at a swift rate with an oil content of less than 2PPM, guaranteeing the necessary air volume. Additionally, the radiator is designed without an after-cooling device, as moisture in materials like cement and flour can lead to coking and caking, severely impacting the conveying process.
Sanzhi's specially engineered low-pressure air compressor for dust conveying is versatile and highly efficient, ideal for applications spanning cement, mineral powder, coal ash unloading, textile fermentation, and more. This compressor is a paragon of energy saving and efficiency. For instance, unloading a 9.6-meter cement tanker using the tanker's own device takes over an hour and a half, consuming significant fuel. In stark contrast, the same task can be completed in just 40 minutes with a 37KW air compressor, markedly enhancing efficiency while conserving energy and reducing costs.
Direct-Connected Rotation Motor
Insulation grade F, protective grade IP55, provides a stable flow rate. Experience constant load operations with high efficiency and exceptional durability.
German Technology Air End
The air end features a large rotor with a low-speed design, ensuring high efficiency, low noise, minimal vibration, and superior reliability. Benefit from reduced leakage and high-volume efficiency.
Smart Button Screen
Enjoy concise and clear functionalities, simple operations, rapid response speed, clear display colors, and ease of maintenance.
Cooling System
A large heat exchange area design effectively prevents high-temperature machine issues, reducing oil emulsification and coking caused by elevated temperatures.
Reliable Oil and Air Separator
Utilizing a vertical tangential cyclone separation structure, it ensures complete separation of oil and air, facilitating easy cartridge replacement and minimizing maintenance costs.
Safe and Zero Leakage Connection
Sanzhi innovatively uses high-rigid pipes and flexible joint connections, abandoning traditional low-cost hydraulic hoses. This prevents bursts often caused by aging. The rubber type O-ring provides a flexible seal to prevent leakage.
Aluminum Intake Valve
Designed to load with electricity and unload with its loss, this valve includes functions for air replenishment and noise elimination. It offers stable and durable performance, with a smooth, wear-resistant surface.
Oil Viewing Mirror
Crafted from PMMA material, this mirror boasts excellent transparency, high temperature resistance, and minimal color change. It allows visual monitoring of oil levels and lubrication, ensuring timely replacements to avoid equipment damage.
Excellent Air Filter
Our air filter, featuring excellent air purification capability, ensures a clean air system with three-stage filtration to maximize purity and meet standard emissions. It efficiently removes substantial steam and minor dust gas.
Oil Filter
This filter removes impurities from the lubricating oil, enhancing lubrication for the head and prolonging the air compressor's lifespan.
High-Quality Soundproof Cotton
Our compact noise reduction housing eliminates vibration during operation and works in tandem with high-quality soundproof cotton to further enhance noise reduction.
| Model |
Power |
Pressure |
Free air delivery* of unit at working pressure |
Voltage |
Frequency |
Noise Level |
Air outlet discharge size |
Weight |
Dimensions |
| KW |
Mpa |
m³/min |
V |
Hz |
dB(A) |
Inch |
Kg |
L*W*H(mm) |
| SZ7.5 |
7.5 |
0.15-0.4 |
1.91 |
380 |
50 |
62 |
G3/4" |
300 |
700*700*1020 |
| SZ11 |
11 |
0.15-0.4 |
2.7 |
380 |
50 |
62 |
G3/4" |
320 |
700*700*1020 |
| SZ15 |
15 |
0.15-0.4 |
3.2 |
380 |
50 |
63 |
G1" |
530 |
1250*780*1220 |
| SZ18 |
18.5 |
0.15-0.4 |
4.5 |
380 |
50 |
65 |
G1" |
560 |
1250*780*1220 |
| SZ22 |
22 |
0.15-0.4 |
5.3 |
380 |
50 |
66 |
G1" |
570 |
1250*780*1220 |
| SZ30 |
30 |
0.15-0.4 |
7.1 |
380 |
50 |
67 |
G1½" |
740 |
1500*940*1350 |
| SZ37 |
37 |
0.15-0.4 |
10.0 |
380 |
50 |
68 |
G1½" |
770 |
1500*940*1350 |
| SZ45 |
45 |
0.15-0.4 |
11.0 |
380 |
50 |
70 |
G1½" |
1060 |
1800*1100*1600 |
| SZ55 |
55 |
0.15-0.4 |
13.0 |
380 |
50 |
73 |
G2"/DN50 |
1250 |
1800*1100*1600 |
| SZ75 |
75 |
0.15-0.4 |
18.0 |
380 |
50 |
73 |
G2"/DN50 |
1480 |
1900*1200*1700 |
| SZ90 |
90 |
0.15-0.4 |
21.0 |
380 |
50 |
78 |
DN80 |
2030 |
2200*1600*1800 |
| SZ110 |
110 |
0.15-0.4 |
27.0 |
380 |
50 |
78 |
DN80 |
2450 |
2250*1600*1800 |
| SZ132 |
132 |
0.15-0.4 |
32.0 |
380 |
50 |
78 |
DN80 |
2550 |
2300*1700*1900 |
| SZ160 |
160 |
0.15-0.4 |
40.0 |
380 |
50 |
78 |
DN80 |
2710 |
2800*1900*2000 |
| SZ185 |
185 |
0.15-0.4 |
45.0 |
380 |
50 |
78 |
DN100 |
3800 |
2800*1760*1920 |
| SZ200 |
200 |
0.15-0.4 |
48.0 |
380 |
50 |
78 |
DN100 |
4100 |
3300*2200*2000 |
| SZ220 |
220 |
0.15-0.4 |
53.0 |
380 |
50 |
78 |
DN100 |
4950 |
3000*2100*2150 |
| SZ250 |
250 |
0.15-0.4 |
60.0 |
380 |
50 |
78 |
DN100 |
5200 |
3000*2100*2150 |
| SZ315 |
315 |
0.15-0.4 |
75.0 |
380 |
50 |
78 |
DN100 |
5650 |
3500*2250*2150 |
| SZ355 |
355 |
0.15-0.4 |
85.0 |
380 |
50 |
78 |
DN100 |
5750 |
3500*2250*2150 |
| Due to product updates, the above parameters are subject to deviation in kind. |
Rugged and durable
Our Electric Motor Low Pressure Screw Air Compressor is engineered for relentless performance, capable of 24-hour non-stop operation and enduring up to 3 million start/stop cycles.
Intelligent control
Experience ultimate safety and reliability with our advanced electrical system, coupled with an intuitive, human-centered computer intelligent control.
Easy use
Designed with simplicity in mind, its straightforward structure ensures effortless installation, operation, and maintenance.
Energy saving
Enhanced work efficiency significantly slashes energy consumption, enabling you to save an impressive 30-50% on costs.
High-temperature shutdown protection
The built-in high-temperature shutdown mechanism automatically activates to safeguard the equipment from overheating, thus preventing potential safety hazards and equipment damage.
1. Unbeatable Price Advantage
We offer direct factory prices to our customers, ensuring they remain highly competitive in the market.
2. Direct Transactions
Our products come straight from the factory, delivering more cost-effective solutions for our customers.
3. OEM & ODM Services
With robust production and management capabilities, we offer comprehensive OEM/ODM services tailored to your needs.
4. Customized Solutions
We cater to non-standard, export, and custom requests for voltage, power, pressure, and more. Contact us for personalized solutions.
5. Small Orders Welcome
Start with a small trial order to experience the exceptional quality of our products.
6. Swift Delivery
We guarantee the timely delivery of high-quality products.
7. Comprehensive Authorization
For distributors, we provide full authorization certificates, empowering you to sell SANZHI brand products confidently.
About us
Sanzhi (Henan) Compressor Co., Ltd. is a distinguished manufacturer specializing in the production of screw air compressors and screw vacuum pumps, with a proud history spanning over a decade. Our extensive product lineup boasts everything from normal pressure and low-pressure screw air compressors to advanced models like permanent magnet frequency conversion screw air compressors, two-stage compression screw air compressors, laser cutting screw air compressors, and mobile screw air compressors in both single-tank and double-tank configurations. Additionally, we provide electric and diesel mobile screw air compressors and state-of-the-art screw vacuum pumps.
In production, we achieve unparalleled efficiency through our state-of-the-art multi-air compressor assembly lines, designed to be both lean and modern. Our dedicated team of over 50 employees consistently works towards optimizing management systems, including ERP, to minimize lead times and ensure the rapid delivery of top-quality products.
In management, our factory proudly holds the ISO9001 quality management system certification. We are committed to implementing a rigorous quality management system and strictly adhere to standardized quality control processes. Every machine undergoes meticulous material inspection, production inspection, and pre-delivery inspection before it is shipped.
In customer service, our pre-sales team offers expert guidance to help customers select the perfect air equipment for their needs, providing high levels of customization in appearance and configuration. We specialize in creating unique OEM products to meet dealer demands. Our after-sales support is unparalleled, with a professional sales and service team ready to respond swiftly to customer needs.
At Sanzhi (Henan) Compressor Co., Ltd., we are committed to delivering superior, stable products and building long-term relationships with our customers. With efficient delivery, top-notch machines, and competitive pricing, we are your reliable partner for satisfactory compressed air solutions.
Our factory is conveniently located in Xinzheng City, Henan Province, China. We are pleased to offer pick-up services from Xinzheng International Airport to our factory, a short 30-kilometer journey that takes about one hour. We warmly welcome you to visit our company!
Successful Cases
Frequently Asked Questions (FAQ)
Q1. Are you a trading company or a manufacturer?
A: We are a distinguished manufacturer of screw air compressors with over a decade of expertise.
Q2. How do you ensure quality control?
A: 1. Rigorous inspection of raw materials.
2. Meticulous control over installation procedures.
3. Each unit undergoes a minimum of 5 hours of continuous testing before shipment.
Q3. What information do I need to provide to get the most suitable machine?
1. Desired air delivery capacity (Units: CFM or m³/Min)
2. Required working pressure (Units: PSI, Bar, or Mpa)
3. Voltage and frequency specifications for your region (Units: V/Hz)
4. Additional accessories needed, such as an air tank, filters, and/or air dryers.
Provide these details, and we will craft the perfect solution for you!
Q4. What are the general unit conversions?
1 Bar = 0.1 Mpa = 14.5 PSI
1 m³/min = 35.32 CFM
1 KW = 1.34 HP
Q5. What voltages are available for the air compressors?
A: Sanzhi offers voltages including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, and can customize to your specific requirements.
Q6. What is your standard delivery time?
A: For standard voltage units, it is 15 working days after order confirmation. For non-standard, please contact our sales team.
Q7. What are your payment terms?
A: 30% T/T in advance, 40% T/T before shipment, and 30% T/T upon presentation of B/L copy. Both USD and RMB are accepted.
Q8. What is your warranty policy?
A: One-year warranty for the entire machine and two years for the screw air compressor, excluding consumables.
Q9. How should maintenance be conducted?
A: Initial maintenance is required after 500 hours. Subsequently, perform regular maintenance every 2000-3000 hours, considering the operational environment.
Q10. Can your machines operate in high-temperature environments?
A: Yes, our machines are designed to function in temperatures ranging from -20° to 45°C (-4ºF to 113ºF).
Q11. Do you provide OEM services?
A: Absolutely! With a skilled design team, we warmly welcome both OEM & ODM orders.
Q12. What is the lifespan of your air compressors?
A: Typically, more than 10 years.
Q13. Will you supply spare parts for the machines?
A: Yes, certainly.
Q14. What after-sales services do you offer?
A: We provide online installation and commissioning instructions and can arrange for our engineers to assist with training and installation.
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